Move JoinString to the base namespace

chrome/browser/chromeos/accessibility/accessibility_manager.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 
 #include "ash/audio/sounds.h"
 #include "ash/autoclick/autoclick_controller.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/metrics/user_metrics_recorder.h"
@@ skipping 827 matching lines @@
   bool is_enabled = (it != preload_engines.end());
   bool should_be_enabled =
       (spoken_feedback_enabled_ && braille_display_connected_);
   if (is_enabled == should_be_enabled)
     return;
   if (should_be_enabled)
     preload_engines.push_back(extension_misc::kBrailleImeEngineId);
   else
     preload_engines.erase(it);
   pref_service->SetString(prefs::kLanguagePreloadEngines,
-                          JoinString(preload_engines, ','));
+                          base::JoinString(preload_engines, ","));
   braille_ime_current_ = false;
 }
 
 // Overridden from InputMethodManager::Observer.
 void AccessibilityManager::InputMethodChanged(
     input_method::InputMethodManager* manager,
     Profile* /* profile */,
     bool show_message) {
   // Sticky keys is implemented only in ash.
   // TODO(dpolukhin): support Athena, crbug.com/408733.
@@ skipping 264 matching lines @@
 void AccessibilityManager::PostUnloadChromeVox(Profile* profile) {
   // Do any teardown work needed immediately after ChromeVox actually unloads.
   if (system_sounds_enabled_)
     ash::PlaySystemSoundAlways(SOUND_SPOKEN_FEEDBACK_DISABLED);
   // Clear the accessibility focus ring.
   AccessibilityFocusRingController::GetInstance()->SetFocusRing(
       std::vector<gfx::Rect>());
 }
 
 }  // namespace chromeos